K8ZE - Colt Cams
I'm pretty sure I'm going to try stick with the K8ZE and see what power I can get out of it. I know its not exactly logical, but either is spending a few hundred quid on a set of used sideskirts. :rofl: But it really comes down to the fact that I can't get my hands on a decent KLZE and I'm only really after 200-210bhp, which I reckon the K8 is capable of.
So, I was thinking about upgrading to more aggressive cams and came across Colt Cams (thanks to an old post by Marco). There cams seem like a good upgrade against the KL cams, which I presume are more aggressive than the K8ZE (I can't find the specs for the K8ZE, only the DE, and I know the ZE were more aggressive).
Has anyone heard of these being put in a K8 and what the end result was? There site indicates that they still idle well on a KL ECU so a piggyback wouldn't be needed - but I'm wondering -
a) Would a piggyback be necessary on the stock K8 ecu?
b) Would I see the real benefits of more aggressive cams on a stock map?
I'm thinking no. Anyone have any insights?
djmarcopolo last edited by
I would go down the route of turbo as theres plenty of parts to do that in america
or if you can find a decent engineering company and be the first to custom fit the xedos 9 supercharged lump
A turbo is definitely on the cards, but I'm slightly worried about how the conrods will handle the boost. So, I'm thinking about trying to get as much power as I can without boosting it, and then stick on a small turbo.
Isn't Famine (I think?) working on fitting the SC?
kulluminati777 last edited by
this is a great idea, i wish i could get 200ish HP with a K8
High lift cams are mega bucks Bro plus there not really that well suited for boosted applications either > too much overlap!
But yeah you will need something to tune timing and fuel curves and probably vernier pulleys too.
The cams are $440, so not too bad before fitting.
Yeah, overlap is something I was concerned about but don't Teg Type Rs have high lift cams,right? Boosted Rs are pretty sweet when set up right. :-) The piggyback (or standalone) will come before the boosting, so I'm just trying to figure out how the cams will behave before that.
$440 for four lumpy sticks?!
Nice lumps, though. :mrgreen: Seems reasonable enough going by the price of cams for Civic's and the like.
indeed very reasonable I would love to see this happen :D
Me too ;-) I've to buy those brakes off Marco first, then I'll get moving on this. Hopefully I can shift the kl36 and the silver Presso soon.
Just remembered that they've actually got cams specifically for a turbo set up. I wonder how they'd perform on an N/A for a short period, not well I'd imagine! Maybe just doing this all in one go (turbo, cams et al) would make more sense.
Also looks like I may have overlooked that Colt Cams regrind the cams you send into them. :oops:
Ah that makes more sense pricewise, easy and cheap to get hold of a second set though?!
You could go:
Turbo then try to dial out some of the overlap with the vernier pulleys.
Plenty of rolling road sessions needed too!
Sounds like a master plan ;-) I should be able to pick up a set from a KLDE handy enough.
I bet your gearbox will explode before rods go on a turbo k8.
Does anyone have any source for evidence of K8ZE cams? My K8ZE has regular lift cams, no ZE about it. Main gain I can see is a better designed Y pipe and no pre cats. Haven't cracked it open yet to check for piston shape/compression. EGR OEM block off plate too. I'm pretty sure the Lantis type R KFZE had higher lift cams like the KLZE, but I'm not so sure the k8 did.
There was a USA guy ran 12+ psi for 2 years on a k8 before his car got wrecked by someone else. I think you can be beating on ZEs reliably with a k8 turbo.
Colt cams, check out probetalk for used sets.
Even KLZE KL31 cams would be a reasonable gain. 200bhp NA without ITBs will be hard work though. Turbo you will exceed that with relative ease IMO. Get a KLG4/KLDE or port out to straight neck/millenia ZE shape your heads, another few bhp plus the KL throttle body is a very easy gain.
Vernier pulleys are a bugger on these as there are 4 cams, I've only seen one set where a guy custom made adjustable gears for the 2 inside the engine driven cams. The ones I have are for different reasons.
M62 eaton /SC14 /rotrex etc
or you're not making it to near 200bhp IMO.
Sorry, I wasn't clear. The idea is to get as much as I can n/a and then turbo it to get it over the line. I figured I could get to around 170 and then a small turbo, like a T25, to get up to the 200 mark. Its pie in the sky thinking to expect 200 break without a turbo, ITB, sc etc…
As for the K8ZE cams, I haven't seen any real specs for it. Supposedly the extra ~15bhp the ZE makes over the K8DE is mostly down to more aggressive cams. I wonder if Rob still has his set of KF cams.
On the adj. cam pulleys, would the CDF ones not be able to get the timing right on these?
Ah ok cool. Well that'd be interesting to see what you can get out the k8. I'm pretty sure I measured my k8ze cams vs the k8de cams and they were the same. Unless the duration is different, but I doubt it.
CDF pulleys correct timing for each bank, you can't change ex VS intake for each bank. If we had 4 pulleys we could do that, but 2 cams are driven inside the head, so it's very hard to alter the timing of each cam.
Interesting. I might see about KF01 cams from a KFZE. There's a KFZE mx6 in a local scrapyard so I should be able to get them cheap. Its hard to get solid info on these cams though. Some guy said he measured them and they had less lift than a KL01, I'm dubious though.
hmm that'd be pretty poor! Well bring some vernier callipers. You don't even need to take the cams off to measure. Just take the valve cover off. My KL31/ZE cams are 1.730"ish or 43.95mm. So that or greater, grab 'em.
I wonder if not having much of a lift would be much of an issue as long as they're more aggressive/longer duration than the k8 since I plan on turbo'ing it, less overlap and all that. They seem handier found than kl36 cams.
A KL boosted with ZE cams, will make more power than with DE cams. More lift is still good for a turbo setup. However more boost can make up for this. I don't think you need to worry about cams much for an end goal of boosting. Only pay for what you can sell on for if you do play with cams etc - IMO.